src/network/netdev/ipvlan.c

   1 /* SPDX-License-Identifier: LGPL-2.1+ */
   2
   3 #include <net/if.h>
   4
   5 #include "conf-parser.h"
   6 #include "ipvlan.h"
   7 #include "networkd-link.h"
   8 #include "string-table.h"
   9
  10 static const char* const ipvlan_mode_table[_NETDEV_IPVLAN_MODE_MAX] = {
  11         [NETDEV_IPVLAN_MODE_L2] = "L2",
  12         [NETDEV_IPVLAN_MODE_L3] = "L3",
  13         [NETDEV_IPVLAN_MODE_L3S] = "L3S",
  14 };
  15
  16 DEFINE_STRING_TABLE_LOOKUP(ipvlan_mode, IPVlanMode);
  17 DEFINE_CONFIG_PARSE_ENUM(config_parse_ipvlan_mode, ipvlan_mode, IPVlanMode, "Failed to parse ipvlan mode");
  18
  19 static const char* const ipvlan_flags_table[_NETDEV_IPVLAN_FLAGS_MAX] = {
  20         [NETDEV_IPVLAN_FLAGS_BRIGDE] = "bridge",
  21         [NETDEV_IPVLAN_FLAGS_PRIVATE] = "private",
  22         [NETDEV_IPVLAN_FLAGS_VEPA] = "vepa",
  23 };
  24
  25 DEFINE_STRING_TABLE_LOOKUP(ipvlan_flags, IPVlanFlags);
  26 DEFINE_CONFIG_PARSE_ENUM(config_parse_ipvlan_flags, ipvlan_flags, IPVlanFlags, "Failed to parse ipvlan flags");
  27
  28 static int netdev_ipvlan_fill_message_create(NetDev *netdev, Link *link, sd_netlink_message *req) {
  29         IPVlan *m;
  30         int r;
  31
  32         assert(netdev);
  33         assert(link);
  34         assert(netdev->ifname);
  35
  36         if (netdev->kind == NETDEV_KIND_IPVLAN)
  37                 m = IPVLAN(netdev);
  38         else
  39                 m = IPVTAP(netdev);
  40
  41         assert(m);
  42
  43         if (m->mode != _NETDEV_IPVLAN_MODE_INVALID) {
  44                 r = sd_netlink_message_append_u16(req, IFLA_IPVLAN_MODE, m->mode);
  45                 if (r < 0)
  46                         return log_netdev_error_errno(netdev, r, "Could not append IFLA_IPVLAN_MODE attribute: %m");
  47         }
  48
  49         if (m->flags != _NETDEV_IPVLAN_FLAGS_INVALID) {
  50                 r = sd_netlink_message_append_u16(req, IFLA_IPVLAN_FLAGS, m->flags);
  51                 if (r < 0)
  52                         return log_netdev_error_errno(netdev, r, "Could not append IFLA_IPVLAN_FLAGS attribute: %m");
  53         }
  54
  55         return 0;
  56 }
  57
  58 static void ipvlan_init(NetDev *n) {
  59         IPVlan *m;
  60
  61         assert(n);
  62
  63         if (n->kind == NETDEV_KIND_IPVLAN)
  64                 m = IPVLAN(n);
  65         else
  66                 m = IPVTAP(n);
  67
  68         assert(m);
  69
  70         m->mode = _NETDEV_IPVLAN_MODE_INVALID;
  71         m->flags = _NETDEV_IPVLAN_FLAGS_INVALID;
  72 }
  73
  74 const NetDevVTable ipvlan_vtable = {
  75         .object_size = sizeof(IPVlan),
  76         .init = ipvlan_init,
  77         .sections = NETDEV_COMMON_SECTIONS "IPVLAN\0",
  78         .fill_message_create = netdev_ipvlan_fill_message_create,
  79         .create_type = NETDEV_CREATE_STACKED,
  80         .generate_mac = true,
  81 };
  82
  83 const NetDevVTable ipvtap_vtable = {
  84         .object_size = sizeof(IPVlan),
  85         .init = ipvlan_init,
  86         .sections = NETDEV_COMMON_SECTIONS "IPVTAP\0",
  87         .fill_message_create = netdev_ipvlan_fill_message_create,
  88         .create_type = NETDEV_CREATE_STACKED,
  89         .generate_mac = true,
  90 };
  91
  92 IPVlanMode link_get_ipvlan_mode(Link *link) {
  93         NetDev *netdev;
  94
  95         if (!streq_ptr(link->kind, "ipvlan"))
  96                 return _NETDEV_IPVLAN_MODE_INVALID;
  97
  98         if (netdev_get(link->manager, link->ifname, &netdev) < 0)
  99                 return _NETDEV_IPVLAN_MODE_INVALID;
 100
 101         if (netdev->kind != NETDEV_KIND_IPVLAN)
 102                 return _NETDEV_IPVLAN_MODE_INVALID;
 103
 104         return IPVLAN(netdev)->mode;
 105 }